Electric-arc lamp



.A.POULSE N. ELECTRIC ARC LAMP.

(No Model.)

Patented Sept. 28,1897.

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UNITED STATES PATENT OFFICE.

ALFRED POULSEN, OF BUFFALO, NEW' YORK.

ELECTRIC-ARC LAMP.

SPECIFICATION forming part of Letters Patent No. 590,670, dated September 28, 1897.

Application filed July 29, 1897. $erial No. 646,351 (No model.)

T0 at whom it may concern:

Be it known that I, ALFRED POULSEN, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have made a new and useful Improvement in Electric Contacts, of which the fol-. lowing is afull, clear, and exact description.

The improvement relates to sliding contacts as used in different electric apparatus, and especially in arc-lamps, substantially as shown in the annexed drawing, making part of this specification.

crepresents a metal rod which can be moved in its own axis or revolved about same and to which the current shall be transferred. The rod passes through a barrel a, to which the current can be conveyed through a rigid joint. The inside space between the barrel a and the rod 0 is filled with small particles e of a good conducting material, such as copper,

which by gravity will fall together and produce a good contact between said two bodies.

packing, and containing small particles of a good conducting material, this being the recipient of the current, surrounds the rod to which the current shall be conveyed, substantially as described.

ALFRED PoULsEN.

Witnesses: NIEL NIELSEN, PETER LEOHNER. 

